CN102041812B - Grouting soil nail for triangularly arranging reinforcing steel bars - Google Patents
Grouting soil nail for triangularly arranging reinforcing steel bars Download PDFInfo
- Publication number
- CN102041812B CN102041812B CN2009100757947A CN200910075794A CN102041812B CN 102041812 B CN102041812 B CN 102041812B CN 2009100757947 A CN2009100757947 A CN 2009100757947A CN 200910075794 A CN200910075794 A CN 200910075794A CN 102041812 B CN102041812 B CN 102041812B
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- Prior art keywords
- steel bars
- reinforcing steel
- soil
- reinforcing bar
- soil nailing
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Abstract
The invention belongs to a soil retaining technology for digging a soil body and stabilizing slopes and provides a grouting soil nail for triangularly arranging reinforcing steel bars. The soil nail comprises reinforcing steel bars and neat cement paste bodies wrapped outside the reinforcing steel bars, wherein the reinforcing steel bars comprise main reinforcing steel bars and auxiliary reinforcing steel bars; the main reinforcing steel bars are triangularly distributed on the section of the soil nail; and the auxiliary reinforcing steel bars are enclosed into a triangle, sleeved and fixed on the main reinforcing steel bars and arranged along the length direction of the soil nail. The utility model comprises a soil nail with a certain bending resistance which has better safe stability for retaining soil. The reinforcing steel bars are triangularly arranged so as to save materials under the condition of the same weight; meanwhile, support slopes of the soil nail can be prevented from quickly collapsing and the stability of the support slopes of the soil nail can be improved; and the time and condition are created for safety evacuation and engineering emergency.
Description
Technical field
The invention belongs to a kind of retaining soil technology that is used for soil excavation and stability of slope, relate in particular to a kind of slip casting soil nailing that keeps off in the native technology.
Background technology
In civil engineering, adopt the plate brad supporting technology quite universal; Plate brad supporting is one of a kind of retaining soil technology that is used for soil excavation and stability of slope; Soil nailing is exactly to insert the slender rod piece of arranging with closeer spacing in the on-the-spot original position soil body; Like reinforcing bar, angle steel or steel pipe etc., be referred to as the slip casting soil nailing and outside reinforcing bar, wrap up in cement paste slurry (cement mortar, fine-stone concrete).At present, what be used for that soil excavation and stability of slope the most generally use is the slip casting soil nailing, and the structure of slip casting soil nailing is: circular cross-section, center are built-in with a reinforcing bar.The slip casting soil nailing is a pore-forming (hole or machine drilling are drawn in manual work) in the first soil body in position, and in the hole, inserts reinforcing bar, the long slip casting filling perforation along the hole then.Whole soil nailing body is by the built-in reinforcing bar in center and wrap up in cement paste slurry (cement mortar, fine-stone concrete) outward and form.In order to guarantee that the soil nailing reinforcing bar is in the center in hole, around reaching enough calculus toppings are arranged, every separated 2-3 rice is provided with medium-height trestle on the length of reinforcing bar, and support welding or colligation are on reinforcing bar.
The characteristics of soil nailing are contact with surrounding soil along elongated, with colony work and with the surrounding soil contact surface on form adhesion stress or frictional force, make that soil nailing is passive to be drawn and give the soil body with the constraint reinforcing, it is stablized; The flexural strength of soil nailing just works when destroying when closing on, and makes soil nailing receive curved scissors simultaneously, though its flexural strength just worked when soil nailing took place to destroy at the soil body, when plate brad supporting effect less, for preventing that the soil body rapid damage from having certain function.From the instance analysis of many plate brad supporting slope failures of field conduct, deficiency and defective that the structure of existing soil nailing is mainly existed are: owing to whole soil nailing body by the built-in reinforcing bar in center with wrap up in cement paste slurry (cement mortar, fine-stone concrete) outward and form.Reinforcing bar is one, and built-in at the center; Existing soil nailing does not possess bending resistance from the force analysis of beam, and the cement paste slurry (cement mortar, fine-stone concrete) after the plate brad supporting side slope is caved in existing many field conducts simultaneously on the soil nailing peels off from reinforcing bar.
Summary of the invention
The object of the invention is intended to overcome the shortcoming of above-mentioned prior art, provides a kind of saving material material, tension and bending resistance high, can prevent that the plate brad supporting side slope from taking place to cave in fast, improves the slip casting soil nailing of the triangular arrangement reinforcing bar of supporting slope stability.
The present invention realizes through following technical scheme:
A kind of slip casting soil nailing of triangular arrangement reinforcing bar is wrapped up in the cement paste slurry outward by reinforcing bar and reinforcing bar and is constituted; Described reinforcing bar has main muscle and auxilliary muscle, the distribution triangular in shape on this soil nailing cross section of main muscle, and auxilliary muscle surrounds the triangle suit and is fixed on the main muscle, and is furnished with several auxilliary muscle along the length direction at this soil nailing.
Stretch out and curve supporting member in described two head that surround leg-of-mutton auxilliary muscle.
The linkage of described reinforcing bar one termination portion by and cage after main muscle on constitute.
The linkage of described reinforcing bar one termination portion by be welded on and cage after main muscle on bolt constitute.
The present invention compared with prior art has outstanding substantive distinguishing features with remarkable beneficial effect to be:
Only receive pulling force when 1, having overcome the soil nailing use; Soil nailing only receives the prejudice of tension; In the process, soil nailing will receive bending because the plate brad supporting side slope is caved in, and soil nailing will possess certain flexural strength; The present invention is the soil nailing with certain bending resistance, and the safety and stability performance of its retaining soil is better.
2, to be triangularly arranged can be isosceles triangle to reinforcing bar of the present invention, or equilateral triangle, also can be arbitrary triangle; Yes preferentially uses isosceles and equilateral triangle, and the flexural strength of its soil nailing is good again, and under the condition of equivalent weight, saves material the most.
3, because soil nailing has higher bending resistance, its most outstanding feature be to prevent that the plate brad supporting side slope from taking place to cave in fast, improved the plate brad supporting slope stability, be that personnel's safe escape and emergency dealing are created time and condition.
Description of drawings
Fig. 1 is one of soil nailing bar construction sketch map of the present invention.
Fig. 2 is two of a soil nailing bar construction sketch map of the present invention.
Fig. 3 is the sketch map in the present invention rounded cross section of cement paste slurry in the soil body.
Fig. 4 is the sketch map in the present invention cement paste slurry cross section triangular in shape in the soil body.
The specific embodiment
As shown in Figure 1, one of soil nailing bar construction sketch map of the present invention, this is the slip casting soil nailing of the triangular arrangement reinforcing bar of the formation linkage 4 behind a kind of main reinforcement one termination portion and the cage.This soil nailing is wrapped up in 5 of cement paste slurries outward by reinforcing bar and reinforcing bar and is constituted; Described reinforcing bar has main muscle 1 and auxilliary muscle 2; The distribution triangular in shape on this soil nailing cross section of main muscle; Auxilliary muscle surrounds the triangle suit and is fixed on the main muscle, and along being furnished with a plurality of auxilliary muscle at the length direction of this soil nailing, stretches out and curves supporting member 3 in two head that surround leg-of-mutton auxilliary muscle.The linkage of reinforcing bar one termination portion is to stretch out head by main muscle to constitute.It can be isosceles triangle that reinforcing bar of the present invention is triangularly arranged, or equilateral triangle, also can be arbitrary triangle; Yes preferentially uses isosceles and equilateral triangle, and the flexural strength of its soil nailing is good again, and saves material the most.
As shown in Figure 2, two of soil nailing bar construction sketch map of the present invention, this is a kind of slip casting soil nailing that is made up of the triangular arrangement reinforcing bar of linkage 4 bolt on the main muscle that is welded on after closing up.
As shown in Figure 3, the sketch map in the present invention rounded cross section of cement paste slurry in the soil body.As shown in Figure 4, the sketch map in the present invention cement paste slurry cross section triangular in shape in the soil body 6.Mechanical punching can be adopted in the circular cross-section hole in the soil body, for the artificial method punching of shoveling in the hole of triangular-section; The soil nailing of triangular-section and the soil nailing of circular cross-section more more can improve soil nailing along elongated and surrounding soil contact area, improve to form adhesion stress or frictional force on soil nailing and the surrounding soil contact surface, thereby improve soil nailing to upper side slope stability.
Claims (4)
1. the slip casting soil nailing of a triangular arrangement reinforcing bar is wrapped up in cement paste slurry (5) outward by reinforcing bar and reinforcing bar and is constituted; It is characterized in that described reinforcing bar has main muscle (1) and auxilliary muscle (2), main muscle (1) distribution triangular in shape on this soil nailing cross section, auxilliary muscle
(2) surround the triangle suit and be fixed on the main muscle (1), and be furnished with several auxilliary muscle (2) along the length direction of this soil nailing, the reinforcing bar one termination portion of this soil nailing is provided with linkage (4).
2. the slip casting soil nailing of a kind of triangular arrangement reinforcing bar according to claim 1 is characterized in that stretching out and curving supporting member (3) in described two head that surround leg-of-mutton auxilliary muscle (2).
3. the slip casting soil nailing of a kind of triangular arrangement reinforcing bar according to claim 1 is characterized in that the linkage (4) of described reinforcing bar one termination portion is to stretch out head by main muscle (1) to constitute.
4. the slip casting soil nailing of a kind of triangular arrangement reinforcing bar according to claim 1 is characterized in that the linkage (4) of described reinforcing bar one termination portion is made up of the bolt on the main muscle (4) that is welded on after closing up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100757947A CN102041812B (en) | 2009-10-22 | 2009-10-22 | Grouting soil nail for triangularly arranging reinforcing steel bars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100757947A CN102041812B (en) | 2009-10-22 | 2009-10-22 | Grouting soil nail for triangularly arranging reinforcing steel bars |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102041812A CN102041812A (en) | 2011-05-04 |
| CN102041812B true CN102041812B (en) | 2012-03-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100757947A Expired - Fee Related CN102041812B (en) | 2009-10-22 | 2009-10-22 | Grouting soil nail for triangularly arranging reinforcing steel bars |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102041812B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2568815Y (en) * | 2002-05-31 | 2003-08-27 | 刘维杰 | Strengthening slip casting anchor stock |
| EP1375754A2 (en) * | 2002-06-22 | 2004-01-02 | Korea Land Corporation | A packing apparatus and method for soil nailing |
| KR100818504B1 (en) * | 2006-12-27 | 2008-03-31 | (주) 공인건설 | Tension soil nail and construction method of precast concrete panel using the same |
| CN201209253Y (en) * | 2008-05-22 | 2009-03-18 | 中国十五冶金建设有限公司 | Simple soil nailing borehole occluding apparatus |
| CN201272968Y (en) * | 2008-09-25 | 2009-07-15 | 中国京冶工程技术有限公司 | Combined anchorage system |
| CN101519878A (en) * | 2009-03-30 | 2009-09-02 | 安徽理工大学 | Earth-layer internally strutting umbelliform earth anchor head and strutting tool thereof |
| CN201520978U (en) * | 2009-10-22 | 2010-07-07 | 宁晋生 | Slip casting soil nail with triangularly arranged reinforced steel bar |
-
2009
- 2009-10-22 CN CN2009100757947A patent/CN102041812B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2568815Y (en) * | 2002-05-31 | 2003-08-27 | 刘维杰 | Strengthening slip casting anchor stock |
| EP1375754A2 (en) * | 2002-06-22 | 2004-01-02 | Korea Land Corporation | A packing apparatus and method for soil nailing |
| KR100818504B1 (en) * | 2006-12-27 | 2008-03-31 | (주) 공인건설 | Tension soil nail and construction method of precast concrete panel using the same |
| CN201209253Y (en) * | 2008-05-22 | 2009-03-18 | 中国十五冶金建设有限公司 | Simple soil nailing borehole occluding apparatus |
| CN201272968Y (en) * | 2008-09-25 | 2009-07-15 | 中国京冶工程技术有限公司 | Combined anchorage system |
| CN101519878A (en) * | 2009-03-30 | 2009-09-02 | 安徽理工大学 | Earth-layer internally strutting umbelliform earth anchor head and strutting tool thereof |
| CN201520978U (en) * | 2009-10-22 | 2010-07-07 | 宁晋生 | Slip casting soil nail with triangularly arranged reinforced steel bar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102041812A (en) | 2011-05-04 |
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Granted publication date: 20120307 Termination date: 20121022 |